Abstract: School Health Unit
was a health improvement program located in schools with the aim of increasing
Clean and Healthy Life Behaviour students. Without a Clean and Healthy Life
Behaviour students more easily exposed to diseases such as diarrhea and worm
infestation. It can reduce student ability to receive their lessons.This study
aims to determine there was difference or not in students knowledge, attitudes
and practice about Clean and Healthy Life Behaviour in the school who had and
hasn’t had School Health Unit.Research site was in Medan. Population in this
study were class III-V in a elementary school who had School Health Unit and a
elementary school who hasn’t had School Health Unit, the samples were 70
students from each school. The sampling technique used was stratified random
sampling. Data was obtained by questionnaires and interviews, analyzed using
the T test for normally distributed data and Mann Whitney test for data not
normally distributed.The research results showed that basic sanitation score mean
were 15, basic sanitation in a school who had School Health Unit was good with
score 14 and a school who hasn’t had
School Health Unit was good too with score 16, implementation of School Health
Unit in a school who had School Health Unit was good, and there are differences
(p ≤ 0.05) in students knowledge(p=0,001), attitudes (p=0,001) and practice
(p=0,001)about Clean and Healthy Life Behaviour in a school who had and hasn’t
had School Health Unit.Based on the results of the study, concluded that there
are differences in students knowledge, attitudes, and actions about Clean and
Healthy Life Behaviour in the school who have School Health Unit and a school
who hasn’t had School Health Unit. For recommendation in this research it is
expected that the school without School Health Unit make cooperation with local
goverment clinic to opening School Health Unit.

Keywords: clean and healthy
life behaviour, school health unit, elementary school